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The Russian trumpet sonata: a study of selected representative sonatas for trumpet and piano with an historical overview of the Russian trumpet school (open access)

The Russian trumpet sonata: a study of selected representative sonatas for trumpet and piano with an historical overview of the Russian trumpet school

The impact of training on virtual team effectiveness was assessed in five areas: communication, planning tasks and setting goals, solving problems and making decisions, resolving conflict, and responding to customer requirements. A 12-page survey was developed exploring all aspects of virtual teams. 180 surveys were distributed, 52 were returned representing 43 companies. Training led to higher effectiveness in planning tasks and setting goals, solving problems and making decisions, and conflict resolution, but not in communication and responding to customer requirements. Training may not solve all the problems that virtual teams will encounter; however, training will make the challenges easier to handle.
Date: May 2003
Creator: Akhmadullin, Iskander
System: The UNT Digital Library
Financial Transfer and Its Impact on the Level of Democracy: A Pooled Cross-Sectional Time Series Model. (open access)

Financial Transfer and Its Impact on the Level of Democracy: A Pooled Cross-Sectional Time Series Model.

This dissertation is a pooled time series, cross-sectional, quantitative study of the impact of international financial transfer on the level of democracy. The study covers 174 developed and developing countries from 1976 through 1994. Through evaluating the democracy and democratization literature and other studies, the dissertation develops a theory and testable hypotheses about the impact of the international variables foreign aid and foreign direct investment on levels of democracy. This study sought to determine whether these two financial variables promote or nurture democracy and if so, how? A pooled time-series cross-sectional model is developed employing these two variables along with other relevant control variables. Control variables included the presence of the Cold War and existence of formal alliance with the United States, which account for the strategic dimension that might affect the financial transfer - level of democracy linkage. The model also includes an economic development variable (per capita Gross National Product) to account for the powerful impact for economic development on the level of democracy, as well as a control for each country's population size. By addressing and the inclusion of financial, economic, strategic, and population size effects, I consider whether change in these variables affect the level of …
Date: May 2003
Creator: Al-Momani, Mohammad H.
System: The UNT Digital Library
Comparisons of Improvement-Over-Chance Effect Sizes for Two Groups Under Variance Heterogeneity and Prior Probabilities (open access)

Comparisons of Improvement-Over-Chance Effect Sizes for Two Groups Under Variance Heterogeneity and Prior Probabilities

The distributional properties of improvement-over-chance, I, effect sizes derived from linear and quadratic predictive discriminant analysis (PDA) and from logistic regression analysis (LRA) for the two-group univariate classification were examined. Data were generated under varying levels of four data conditions: population separation, variance pattern, sample size, and prior probabilities. None of the indices provided acceptable estimates of effect for all the conditions examined. There were only a small number of conditions under which both accuracy and precision were acceptable. The results indicate that the decision of which method to choose is primarily determined by variance pattern and prior probabilities. Under variance homogeneity, any of the methods may be recommended. However, LRA is recommended when priors are equal or extreme and linear PDA is recommended when priors are moderate. Under variance heterogeneity, selecting a recommended method is more complex. In many cases, more than one method could be used appropriately.
Date: May 2003
Creator: Alexander, Erika D.
System: The UNT Digital Library
Comparative Analysis of Management and Employee Job Satisfaction and Policy Perceptions. (open access)

Comparative Analysis of Management and Employee Job Satisfaction and Policy Perceptions.

The purpose of the study was to investigate the perceptions of job satisfaction as defined by management and nonmanagement employees and to compare both parties' perceptions of organizational benefits to a list prepared by the organization's benefit personnel. Turnover is costly to the organization, both in money and in the impact it has on those individuals remaining with the organization. Every effort should be undertaken to reduce the amount of turnover within the organization. A contributing factor leading to turnover may be a gap between what the employees believe is important to them and what management believes is important to the employees. The boundaries of the gap need to be identified before any effort can be made to reduce or bridge the gap. Once the boundaries are identified, policies can be analyzed and the possibility of reducing the gap investigated. Management as a whole must be aware of the needs and wants of their employees before any attempt to develop a retention strategy is undertaken. This knowledge can be acquired only through two-way communication with the employee. The communication process includes the simple process of asking employees for this information and then listening to how they respond. This study suggests …
Date: May 2003
Creator: Andrews, Charles G.
System: The UNT Digital Library

Interfacial Electrochemistry of Metal Nanoparticles Formation on Diamond and Copper Electroplating on Ruthenium Surface

Access: Use of this item is restricted to the UNT Community
An extremely facile and novel method called spontaneous deposition, to deposit noble metal nanoparticles on a most stable form of carbon (C) i.e. diamond is presented. Nanometer sized particles of such metals as platinum (Pt), palladium (Pd), gold (Au), copper (Cu) and silver (Ag) could be deposited on boron-doped (B-doped) polycrystalline diamond films grown on silicon (Si) substrates, by simply immersing the diamond/Si sample in hydrofluoric acid (HF) solution containing ions of the corresponding metal. The electrons for the reduction of metal ions came from the Si back substrate. The diamond/Si interfacial ohmic contact was of paramount importance to the observation of the spontaneous deposition process. The metal/diamond (M/C) surfaces were investigated using Raman spectroscopy, scanning electron microscopy (SEM), x-ray photoelectron spectroscopy (XPS) and x-ray diffractometry (XRD). The morphology (i.e. size and distribution) of metal nanoparticles deposits could be controlled by adjusting the metal ion concentration, HF concentration and deposition time. XRD data indicate the presence of textured and strained crystal lattices of Pd for different Pd/C morphologies, which seem to influence the electrocatalytic oxidation of formaldehyde (HCHO). The sensitivity of electrocatalytic reactions to surface crystal structure implies that M/C could be fabricated for specific electrocatalytic applications. The research also …
Date: May 2003
Creator: Arunagiri, Tiruchirapalli Natarajan
System: The UNT Digital Library

The Nightingale in Poetry and Music

Access: Use of this item is restricted to the UNT Community
This thesis surveys a variety of songs and arias for high soprano which feature the nightingale; examines the musical elements that symbolize, refer to, or imitate the nightingale; and compares these musical elements with transcriptions of the nightingale's song. The first chapter reviews the symbolic development of the nightingale and its role in poetry and literature. The interior chapters address a selection of musical compositions that feature the nightingale and its song. The final chapter establishes a relationship between the sound of the actual sound of the nightingale and the musical gestures created by composers to imitate the nightingale.
Date: May 2003
Creator: Blizzard, Amy
System: The UNT Digital Library
An Investigation into the Effects of Long-term Staff Development on Teacher Perceptions and Reading Achievement on Young Children (open access)

An Investigation into the Effects of Long-term Staff Development on Teacher Perceptions and Reading Achievement on Young Children

The effectiveness of long-term staff development (Reading Academy Project-RAP) on students' reading scores on the Texas Assessment of Academic Skills (TAAS) test was examined to determine if teachers transferred newly learned teaching strategies into practice and changed their beliefs about reading instruction. In a four-year cohort longitudinal study in an East Texas rural community, the effects of long-term staff development on third grade students' TAAS test reading scores, teacher practices, and teacher beliefs were explored. Populations included a teacher group (N = 17), an experimental (N = 419), and a control (N = 419) group of students. Children's groups were matched pairs based on five demographic characteristics and membership or non-membership in one or more of six categories. An application survey and four end-of-the-year surveys provided teacher data regarding classroom practices. One interview question provided information about teacher beliefs. Results indicate students who had a RAP teacher for at least one year scored significantly higher on the TAAS reading test in the third grade than those without a RAP teacher. Examination of students having more than one year with an academy teacher failed to produce statistically significant differences in TAAS test reading scores; however, an upward trend was noted. Statistically …
Date: May 2003
Creator: Boatman, Vikki
System: The UNT Digital Library
The Dynamic Foundation of Fractal Operators. (open access)

The Dynamic Foundation of Fractal Operators.

The fractal operators discussed in this dissertation are introduced in the form originally proposed in an earlier book of the candidate, which proves to be very convenient for physicists, due to its heuristic and intuitive nature. This dissertation proves that these fractal operators are the most convenient tools to address a number of problems in condensed matter, in accordance with the point of view of many other authors, and with the earlier book of the candidate. The microscopic foundation of the fractal calculus on the basis of either classical or quantum mechanics is still unknown, and the second part of this dissertation aims at this important task. This dissertation proves that the adoption of a master equation approach, and so of probabilistic as well as dynamical argument yields a satisfactory solution of the problem, as shown in a work by the candidate already published. At the same time, this dissertation shows that the foundation of Levy statistics is compatible with ordinary statistical mechanics and thermodynamics. The problem of the connection with the Kolmogorov-Sinai entropy is a delicate problem that, however, can be successfully solved. The derivation from a microscopic Liouville-like approach based on densities, however, is shown to be impossible. …
Date: May 2003
Creator: Bologna, Mauro
System: The UNT Digital Library
Latin Mass for Choir, Orchestra, Soprano and Mezzo-Soprano Soloists (open access)

Latin Mass for Choir, Orchestra, Soprano and Mezzo-Soprano Soloists

The Latin Mass is a musical composition in five movements, scored for large choir, standard orchestra, and two soloists. The movements are the standard parts of the Roman Catholic Mass Ordinary. The language is set mainly in Latin with two exceptions: the Kyrie movement is set in Greek (which is the standard Roman Catholic setting), and the Credo is simultaneously recited in English and sung in Latin. The work is scored using conventional notation techniques and employs rather conservative technical demands on both the choir and orchestra. No extended techniques are required of any of the performers. It is set in a modal harmonic language.
Date: May 2003
Creator: Bonneau, Paul G.
System: The UNT Digital Library
Perceived value of journals for academic prestige, general reading and classroom use: A study of journals in educational and instructional technology. (open access)

Perceived value of journals for academic prestige, general reading and classroom use: A study of journals in educational and instructional technology.

Conducting research, evaluating research, and publishing scholarly works all play an extremely prominent role for university faculty members. Tenure and promotion decisions are greatly influenced by the perceived value of publications as viewed by members of faculty evaluation committees. Faculty members seeking tenure may be limited to publishing in a limited group of journals perceived to be valuable by members of an academic committee. This study attempted to determine the value of various kinds of periodicals (journals, magazines, and e-journals), based on three principal criteria, as perceived by professionals (university faculty, K-12 practitioners, and corporate trainers) in the educational/instructional technology (E/IT) field. The criteria for journal evaluation were Academic Prestige, General Reading, and Classroom Use. The perceived value of journals based on each criterion was compared to determine any significant differences. Members of the Association for Educational Communications and Technology (AECT) were asked to rate 30 journals in the E/IT field using the three criteria. Statistically significant differences were found among ratings in 63% of the journals. The statistical analyses indicated that differences in the perceived value of journals among E/IT professionals across the three criteria (Academic Prestige, General Reading, and Classroom Use) were statistically significant. It is also noted …
Date: May 2003
Creator: Bray, Kaye Evitt
System: The UNT Digital Library
Visual Cueing: Investigating the Effects of Text Annotation on Student Retention Rates (open access)

Visual Cueing: Investigating the Effects of Text Annotation on Student Retention Rates

This Study examines the grades of students using study skill methods and those who do not. The experiment consists of giving the treatment group the opportunity to use well- known study techniques. The Control group could only read the material. Both groups were given ten minutes to read a pre-selected text. The text consisted of an 1,807 word lesson on the, "Technical Training Management System." Each group was given five minutes to take a twenty item quiz. Fifty-five students in the control group were limited to only reading the material. Fifty-six students in the treatment group could choose between highlighting, note-taking, and underlining. The results of the test scores were compared using a t - test for dependent samples. One week later, the same students in each group were re-tested, using the same quiz they had taken earlier. Students had five minutes to review study material. Study material for the treatment group included the same material they had annotated earlier. The Results from each group wascompared. Efforts were made to avoid potential flaws in previous studies, thereby producing more viable results. Results of this study indicate there is no significant difference between the grades of students who use the aforementioned …
Date: May 2003
Creator: Brown, Ron
System: The UNT Digital Library
The Effects of Practice Procedure and Task Difficulty on Tonal Pattern Accuracy. (open access)

The Effects of Practice Procedure and Task Difficulty on Tonal Pattern Accuracy.

The study investigated the relative effectiveness of different proportions of time spent on physical and mental practice, in the context of a music performance of a tonal pattern over harmonic progressions of two difficulty levels. Using a sampling without replacement procedure, sixty undergraduate students were assigned to four practice groups partially blocked for musical instrument. The groups included a physical practice group, a mental practice group and two combined mental and physical practice groups in the proportions of (a) 66% physical and 33% mental, and (b) 33% physical and 66% mental. Each subject performed a pretest, a 3 minute practice session, and a posttest on both harmonic progressions. Presentation of the harmonic progressions were counterbalanced to control for practice effects All pre- and posttests were recorded and scored according to number of note errors. An ANCOVA procedure using pretest scores as covariates revealed that: (a) there were no differences between the different practice groups on the measure of note errors, (b) there was a significant difference between the two harmonic progressions on the measure of note errors, such that performance on the easy progression was significantly better than performance on the hard progression, and (c) there was a significant interaction …
Date: May 2003
Creator: Cahn, Dan
System: The UNT Digital Library
Synthesis and host-guest interaction of cage-annulated podands, crown ethers, cryptands, cavitands and non-cage-annulated cryptands. (open access)

Synthesis and host-guest interaction of cage-annulated podands, crown ethers, cryptands, cavitands and non-cage-annulated cryptands.

Symmetrical cage-annulated podands were synthesized via highly efficient synthetic strategies. Mechanisms to account for the key reaction steps in the syntheses are proposed; the proposed mechanisms receive support from the intermediates that have been isolated and characterized. An unusual complexation-promoted elimination reaction was studied, and a mechanism is proposed to account for the course of this reaction. This unusual elimination may generalized to other rigid systems and thus may extend our understanding of the role played by the host molecules in "cation-capture, anion-activation" via complexation with guest molecules. Thus, host-guest interaction serves not only to activate the anion but also may activate the leaving groups that participate in the complexation. Complexation-promoted elimination provides a convenient method to desymmetrize the cage while avoiding protection/deprotection steps. In addition, it offers a convenient method to prepare a chiral cage spacer by introducing 10 chiral centers into the host system in a single synthetic step. Cage-annulated monocyclic hosts that contain a cage-butylenoxy spacer were synthesized. Comparison of their metal ion complexation behavior as revealed by the results of electrospray ionization mass spectrometry (ESI-MS), alkali metal picrate extraction, and pseudohydroxide extraction with those displayed by the corresponding hosts that contain cage-ethylenoxy or cage-propylenoxy spacers reveals …
Date: May 2003
Creator: Chen, Zhibing
System: The UNT Digital Library
The predictive influence of variables in three different academic learning environments on the intentions of music education majors to leave the degree program. (open access)

The predictive influence of variables in three different academic learning environments on the intentions of music education majors to leave the degree program.

Attrition rates among students in music teacher training programs have contributed to a shortage of qualified music teachers for the nation's schools. The purpose of this study was to investigate the predictive relationship of academic variables in three different learning environments and the intent of a select population of music education majors to leave the degree program. The study drew upon the work of Tinto, Bean and Astin to form a theoretical foundation for examining variables unique to student withdrawal from the music education degree plan. Variables were examined within the context of three different learning environments: (1) applied lessons, (2) ensembles and (3) non-performance courses. Participants were 95 freshmen and sophomore music education majors at a public university who were enrolled in the music education degree program during the spring semester, 2002. Data included participant responses on the Music Student Inventory (MSI), a questionnaire developed specifically for the study, and grade data from university records. Independent variables in the study included participants' perceptions of (1) Ensemble experiences, (2) Applied lesson experiences, (3) Non-performance music course experiences, (3) Course requirements, and (4) Performance growth. Additional variables included: (1) Ensemble placement, (2) Course grades for music theory, applied lessons and aural …
Date: May 2003
Creator: Corley, Alton L.
System: The UNT Digital Library

Elementary Teacher Attrition and Factors of Organizational Climate

Access: Use of this item is restricted to the UNT Community
As the United States faces a critical teacher shortage, it is important to examine all factors that may contribute to the revolving door of teacher attrition. This study explored the climate of elementary schools to determine if there was a correlation between teacher attrition and school organizational climate. Three basic research questions were addressed: 1) Is there a relationship between school organizational climate and teacher attrition? 2) Is a change in campus leadership related to school organizational climate? 3) Is there a relationship between a change in campus leadership and teacher attrition? Thirty-seven elementary schools were examined in terms of their individual teacher attrition rates and their climate survey scores. The data utilized in this study came from one school district's climate survey and teacher attrition rates for the 2000-2001 school year. The findings of this study indicate that factors of organizational climate may predict teacher attrition rates. Specifically, instructiona support may be related to teacher attrition. Major components of instructional support include principal behaviors, respect for teaching and learning, and communication with administrators. Teacher attrition was not related to principal experience. Also, principal experience was not related to factors of school organizational climate.
Date: May 2003
Creator: Cotten, Virginia E.
System: The UNT Digital Library

"For Reformation and Uniformity": George Gillespie (1613-1648) and the Scottish Covenanter Revolution

Access: Use of this item is restricted to the UNT Community
As one of the most remarkable of the Scottish Covenanters, George Gillespie had a reputation in England and Scotland as an orthodox Puritan theologian and apologist for Scottish Presbyterianism. He was well known for his controversial works attacking the ceremonies of the Church of England, defending Presbyterianism, opposing religious toleration, and combating Erastianism. He is best remembered as one of the Scottish Commissioners to the Westminster Assembly in London, which sought to reform the English Church and establish a uniform religion for the two kingdoms. This study assesses his life, ideas, and legacy. In Gillespie's estimation revelation and reason played complementary roles in the Christian life. While the Fall had affected man's reasoning abilities, man could rely upon natural law and scholarship as long as one kept them within the limits of God's truth revealed in Scripture. Moreover, he insisted that the church structure its worship ceremonies, government, and discipline according to the pattern set forth in the Bible. In addition, he emphasized the central role of God's Word and the sacraments in the worship of God and stressed the importance of cultivating personal piety. At the heart of Gillespie's political thought lay the Melvillian theory of the two kingdoms, …
Date: May 2003
Creator: Culberson, James Kevin
System: The UNT Digital Library

On-Road Remote Sensing of Motor Vehicle Emissions: Associations between Exhaust Pollutant Levels and Vehicle Parameters for Arizona, California, Colorado, Illinois, Texas, and Utah

Access: Use of this item is restricted to the UNT Community
On-road remote sensing has the ability to operate in real-time, and under real world conditions, making it an ideal candidate for detecting gross polluters on major freeways and thoroughfares. In this study, remote sensing was employed to detect carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxide (NO). On-road remote sensing data taken from measurements performed in six states, (Arizona, California, Colorado, Illinois, Texas, and Utah) were cleaned and analyzed. Data mining and exploration were first undertaken in order to search for relationships among variables such as make, year, engine type, vehicle weight, and location. Descriptive statistics were obtained for the three pollutants of interest. The data were found to have non-normal distributions. Applied transformations were ineffective, and nonparametric tests were applied. Due to the extremely large sample size of the dataset (508,617 records), nonparametric tests resulted in "p" values that demonstrated "significance." The general linear model was selected due to its ability to handle data with non-normal distributions. The general linear model was run on each pollutant with output producing descriptive statistics, profile plots, between-subjects effects, and estimated marginal means. Due to insufficient data within certain cells, results were not obtained for gross vehicle weight and engine type. The "year" …
Date: May 2003
Creator: Dohanich, Francis Albert
System: The UNT Digital Library
A Comparison of Skill Level of Parents Trained in the Landreth Filial Therapy Model and Graduate Students Trained in Play Therapy (open access)

A Comparison of Skill Level of Parents Trained in the Landreth Filial Therapy Model and Graduate Students Trained in Play Therapy

The purpose of this study was to determine if parents trained in the Landreth Filial Therapy Model could demonstrate child-centered play therapy skills as effectively as graduate play therapy students who completed an Introduction to Play Therapy course. The participants in both the parent group and the graduate student group were videotaped in play sessions with children pre- and post-training in order to measure change in adult empathic behavior as defined on the Measurement of Empathy in Adult-Child Interaction (MEACI). The specific skills measured in this study were (a) communicating acceptance to the child, (b) allowing the child to direct his or her own play during the play sessions, (c) demonstrating appropriate levels of involvement in the child's play, and (d) demonstrating empathic behavior toward the child. The Landreth Filial Therapy Model is a training system that utilizes both didactic and dynamic means to train parents and other paraprofessionals to be therapeutic agents of change with children. Parents are taught child-centered play therapy skills to use in weekly home play sessions with their children in order to strengthen the emotional bond between parent and child. The Introduction to Play Therapy course is a graduate-level counseling course at the University of …
Date: May 2003
Creator: Elling, Roseanne Paul
System: The UNT Digital Library
The Light, for Two Narrators and Chamber Ensemble (open access)

The Light, for Two Narrators and Chamber Ensemble

The Light is a twenty-four minute composition for two narrators and chamber orchestra. The two narrators perform the roles of the Apostle John and Moses. After an overview of the piece and a brief history of pieces incorporating narrators, the essay focuses on my compositional process, describing how orchestration, drama, motive, and structure work together in the piece. The Light is organized as a series of five related scenes. In the first scene, God creates light. In the second scene, God places Adam and Eve into the Garden of Eden to tend it, allowing them to eat from any tree except the tree of the knowledge of good and evil. The serpent appears, Adam and Eve succumb to his evil influence, and God banishes them from the Garden of Eden. Many generations have passed when Scene Three begins. Moses relates a story from Israel's journey in the wilderness after leaving Egypt. The people had become frustrated with Moses and with God. When God sent serpents among them as punishment, they appealed to Moses to pray for them. God's answer was for Moses to make a bronze serpent and place it on a pole. Whoever looked at the serpent would live. …
Date: May 2003
Creator: Feezell, Mark Brandon
System: The UNT Digital Library
A Case Study of Characteristics and Means of Person-to-Person Influence in American Kodály Music Education: Katinka Scipiades Dániel (open access)

A Case Study of Characteristics and Means of Person-to-Person Influence in American Kodály Music Education: Katinka Scipiades Dániel

The purpose of this study was to investigate the characteristics and means of Katinka Dániel's interpersonal influences through the perceptions of 20 selected students, protégés, and colleagues, and to study the behavioral and attitudinal changes they attributed to her influence. A case study design and structured interview questionnaire were used to study four variables coming from the social sciences' literature on influence: legitimate authority, attractiveness, expert authority, and trustworthiness. Responses were qualitatively analyzed to determine the role those variables played in Dániel's interpersonal influence. All interviewees were music teachers who used the Kodály method in their teaching and have studied or worked with Dániel. Two images of Dániel emerged from the interviews. The first, a business-like image, emanated from Dániel's work in the classroom, and the second, a maternal image, came from personal relationships with her students and associates. Attractiveness (defined as a willingness to respond positively to the requests of an influential person because one respects that individual and wants to obtain that person's approval) proved to be the principal characteristic of influence, followed by legitimate authority, then expertise. Trustworthiness played a lesser role. The greatest effect of Dániel's influence was on the interviewees' teaching. Among the factors interviewees …
Date: May 2003
Creator: Ferrell, Janice René
System: The UNT Digital Library
Acculturative Processes and Their Impact on Self-Reports of Psychological Distress in Mexican-American Adolescents (open access)

Acculturative Processes and Their Impact on Self-Reports of Psychological Distress in Mexican-American Adolescents

The current study examined the effects of acculturative processes on the self-report of behavioral problems in Hispanic children ages 11-14. Acculturation was measured by the Acculturation Rating Scale for Mexican Americans-II (ARSMA-II) (ã Sage Publications, Thousand Oaks, CA, www.sagepub.com) (Cuellar, Arnold, and Maldonado, 1995) and the self-report of behavioral symptoms was assessed using the Youth Self-Report (ã T.M. Achenbach, Burlington, VT, www.aseba.com) (Achenbach, 1991). It was hypothesized that while both the linear and orthogonal categories of acculturation would account for a significant proportion of the variance in behavior problems in this age group, the orthogonal model would account for a larger proportion of variance due to its multidimensional nature. As well, it was hypothesized that the experimental Marginalization scales of the ARSMA-II would be predictive of behavioral problems. Multivariate analysis of variance was used to test these hypotheses and results were non-significant for the linear, orthogonal, and marginalization categories. The effects of the ethnic/cultural homogeneity of the region from which the sample was drawn, the buffering of social support, and the developmental aspects of ethnic identity are discussed as factors which may have influenced the potential impact of acculturative stress on psychological and behavioral functioning.
Date: May 2003
Creator: Garrison, Lance A.
System: The UNT Digital Library
Robert Schumann's Symphony in D Minor, Op. 120: A Critical Study of Interpretation in the Nineteenth-Century German Symphony (open access)

Robert Schumann's Symphony in D Minor, Op. 120: A Critical Study of Interpretation in the Nineteenth-Century German Symphony

Robert Schumann's D-minor Symphony endured harsh criticism during the second half of the nineteenth century because of misunderstandings regarding his compositional approach to the genre of the symphony; changes in performance practices amplified the problems, leading to charges that Schumann was an inept orchestrator. Editions published by Clara Schumann and Alfred Dörffel as well as performing editions prepared by Woldemar Bargiel and Gustav Mahler reflect ideals of the late nineteenth century that differ markedly from those Schumann advanced in his 1851 autograph and in the Symphony's first publication in 1853. An examination of the manuscript sources and the editions authorized by Schumann reveals that he imbued the Symphony with what he called a "special meaning" in the form of an implied narrative. Although Schumann provided no written account of this narrative, it is revealed in orchestrational devices, particularly orchestration, dynamics, and articulation, many of which have been either altered or suppressed by later editors. A reconsideration of these devices as they are transmitted through the authorized sources permits a rediscovery of the work's special meaning and rectifies long-standing misperceptions that have become entrenched in the general literature concerning Schumann in general and the D-minor Symphony in particular.
Date: May 2003
Creator: Hellner, Jean Marie
System: The UNT Digital Library
Structure property and deformation analysis of polypropylene montmorillonite nanocomposites. (open access)

Structure property and deformation analysis of polypropylene montmorillonite nanocomposites.

Nanocomposites with expandable smectites such as montmorillonite layered silicates (MLS) in polymer matrices have attracted extensive application interest. Numerous MLS concentrations have been used with no particular justification. Here, we investigate the effects of MLS dispersion within the matrix and on mechanical performance. The latter is resolved through a three-prong investigation on rate dependent tensile results, time dependent creep results and the influence of a sharp notch in polypropylene (PP) nanocomposites. A fixed concentration of maleated polypropylene (mPP) was utilized as a compatibilizer between the MLS and non-polar PP. Analysis of transmission electron micrographs and X-ray diffraction patterns on the surface and below the surface of our samples revealed a unique skin-core effect induced by the presence of clay. Differential scanning calorimetric and polarized optical microscopic examination of spherulites sizes showed changes in nucleation and growth resulting from both the maleated PP compatibilizer and the MLS. These structural changes resulted in a tough nanocomposite, a concept not reported before in the PP literature. Nonlinear creep analysis of the materials showed two concentrations 3 and 5 % wt of PP, which reduced the compliance in the base PP. The use of thermal wave imaging allowed the identification of ductile failure among …
Date: May 2003
Creator: Hernandez-Luna, Alejandro
System: The UNT Digital Library
jn4.gesture: An interactive composition for dance. (open access)

jn4.gesture: An interactive composition for dance.

jn4.gesture is an interactive multimedia composition for dancer and computer designed to extend the possibilities of artistic expression through the use of contemporary technology. The software produces the audiovisual materials, which are controlled by the movement of the dancer on a custom rug sensor. The software that produces the graphic and sonic material is created using a modular design. During run-time, the software's modules are directed by a scripting language developed to control and adjust the audiovisual production through time. The visual material provides the only illumination of the performer, and the projections follow the performer's movements. The human form is isolated in darkness and it remains the focal point in the visual environment. These same movements are used to create the sonic material and control the diffusion of sound in an eight channel sound system. The video recording of the performance was made on April 22, 2002. The work was produced in a specialized performance space using two computer projectors and a state of the art sound system. Arleen Sugano designed the costumes, choreographed and performed the composition in the Merrill Ellis Intermedia Theatre (MEIT) at the University of North Texas. The paper focuses on the design of the …
Date: May 2003
Creator: Holmes, Douglas B.
System: The UNT Digital Library